本発明の一実施形態に係る照明器具１１について、図１から図８を用いて説明する。本実施形態に係る照明器具１１は、ＬＥＤ素子４２を光源とする照明器具である。照明器具１１は、例えば天井面等の被取付部Ｃに直接取り付けられる直付け型のシーリングライトとして使用することが可能である。なお、照明器具１１は、天井面に限らず、壁面（傾斜面も含む）に取り付けてブラケットライトとして使用することも可能である。以下の説明では、照明器具１１の光を照射する側を照明器具１１の照射面側とし、照明器具１１における被取付部Ｃに対向する側を照明器具１１の取付面側（照射面側の反対側）として説明する。また、照明器具１１の取付面側とは、照明器具１１の背面側（裏面側）である。また、図２等に示す照明器具１１が被取付部Ｃに取付けられた状態において、被取付部Ｃに直交する方向を照明器具１１の上下方向とした場合、照明器具１１の取付面側を上方とし、照明器具１１の照射面側の直下方向を下方として説明する。照明器具１１の上下方向に対して直交する方向を照明器具１１の側方として説明する。また、以下の説明において、下方から照明器具１１等を視た状態を平面視とする。上下方向に対して直交方向から照明器具１１等を視た状態を側面視とする。照明器具１１等の断面形状を視た状態を断面視とする。
The lighting equipment 11 according to the embodiment of the present invention will be described with reference to FIGS. 1 to 8. The luminaire 11 according to the present embodiment is a luminaire that uses the LED element 42 as a light source. The luminaire 11 can be used as a direct-attached ceiling light that is directly attached to the attached portion C such as the ceiling surface. The lighting fixture 11 can be attached not only to the ceiling surface but also to a wall surface (including an inclined surface) and used as a bracket light. In the following description, the side that irradiates the light of the luminaire 11 is the irradiation surface side of the luminaire 11, and the side of the luminaire 11 that faces the attached portion C is the attachment surface side of the luminaire 11 (opposite the irradiation surface side). Side). The mounting surface side of the luminaire 11 is the back side (back surface side) of the luminaire 11. Further, when the luminaire 11 shown in FIG. 2 or the like is attached to the attached portion C and the direction orthogonal to the attached portion C is the vertical direction of the luminaire 11, the attachment surface side of the luminaire 11 is upward. The direction directly below the irradiation surface side of the luminaire 11 will be described as downward. The direction orthogonal to the vertical direction of the luminaire 11 will be described as the side of the luminaire 11. Further, in the following description, a state in which the luminaire 11 and the like are viewed from below is defined as a plan view. The state in which the luminaire 11 or the like is viewed from a direction orthogonal to the vertical direction is defined as a side view. The state in which the cross-sectional shape of the luminaire 11 or the like is viewed is referred to as a cross-sectional view.
照明器具１１は、器具本体２１、電源部３１、光源部（ＬＥＤモジュール）４１、導光部材５１、第１反射部材である反射部材６１、第２反射部材である環状反射部材７１、光源セット部８１、取付部材９１、端子台１００を主に備える。照明器具１１の外形は、平面視において略円形状であって、照明器具１１の高さ方向（図２の照明器具１１の上下方向）の寸法が、照明器具１１の径方向（図２の照明器具１１の上下方向に対して直交方向）の寸法よりも小さく薄型で扁平な略円柱形状である。
なお、照明器具１１の外形形状は、本実施形態に限定されるものではない。照明器具１１の外形形状は、平面視において略円形状以外に、例えば、楕円形状、正方形状、長方形状、多角形状や扇形、またはそれらを組み合わせた形状にすることもできる。
The lighting fixture 11 includes a fixture main body 21, a power supply unit 31, a light source unit (LED module) 41, a light guide member 51, a reflection member 61 which is a first reflection member, an annular reflection member 71 which is a second reflection member, and a light source set unit. It mainly includes 81, a mounting member 91, and a terminal block 100. The outer shape of the luminaire 11 is substantially circular in a plan view, and the height direction of the luminaire 11 (vertical direction of the luminaire 11 in FIG. 2) is the radial direction of the luminaire 11 (illumination in FIG. 2). It has a substantially cylindrical shape that is thin and flat, smaller than the dimension (direction orthogonal to the vertical direction) of the appliance 11.
The outer shape of the luminaire 11 is not limited to this embodiment. The outer shape of the luminaire 11 may be, for example, an elliptical shape, a square shape, a rectangular shape, a polygonal shape, a fan shape, or a combination thereof, in addition to the substantially circular shape in a plan view.
器具本体２１は、電源部３１、光源部（ＬＥＤモジュール）４１、導光部材５１、反射部材６１、環状反射部材７１、光源セット部８１、端子台１００を保持するともに取付部材９１に取り付けられる部材である。器具本体２１は、導光部材５１を露出するための開口を下側に有するとともに上端が開放された略円筒状部材である。器具本体２１には、電源部３１、光源部４１、導光部材５１、反射部材６１、環状反射部材７１、光源セット部８１、端子台１００が収容される。器具本体２１は、円筒部２２と、円筒部２２の下端部から径方向内側に延出される円環状の内縁部２３と、を有している。器具本体２１は、熱伝導率の高い、例えば金属素材で構成される。本実施形態では一例として器具本体２１をアルミニウム合金で構成し、電源部３１および光源部４１から生ずる熱を放熱することができる。器具本体２１は、その最大内径寸法が取付部材９１の外径寸法よりも大きく、取付部材９１の照射面側に取り付け可能である。器具本体２１は、円筒部２２の内周面に側面視四角形状で凸状の複数（本実施形態では３つ）の位置決め部２２ａと、各位置決め部２２ａに対応して円筒部２２の上端部に設けられる側面視略長方形状で凸状の複数（本実施形態では３つ）の係止部２２ｂと、各位置決め部２２ａに対応して円筒部２２の下端部に設けられる側面視略長方形状で凸状の複数（本実施形態では３つ）の下端凸部２２ｃと、を有している。位置決め部２２ａ、係止部２２ｂ及び下端凸部２２ｃは、円筒部２２の内周面において周方向に沿って略等間隔で形成されている。位置決め部２２ａの上端部は、取付部材９１に器具本体２１を取り付ける際に、取付部材９１の被係止部９４（案内部９４ｂ）の下端部の位置を規制するものである。位置決め部２２ａの下端部は、器具本体２１に光源セット部８１を取り付ける際に、光源セット部８１（光源部４１）の上端部の位置を規制するものである。これにより、光源セット部８１（光源部４１）を器具本体２１の底部の所定の位置に保持することができる。
The appliance main body 21 holds the power supply unit 31, the light source unit (LED module) 41, the light guide member 51, the reflection member 61, the annular reflection member 71, the light source set unit 81, and the terminal block 100, and is attached to the attachment member 91. Is. The instrument main body 21 is a substantially cylindrical member having an opening for exposing the light guide member 51 on the lower side and having an open upper end. The instrument main body 21 houses a power supply unit 31, a light source unit 41, a light guide member 51, a reflection member 61, an annular reflection member 71, a light source set unit 81, and a terminal block 100. The instrument body 21 has a cylindrical portion 22 and an annular inner edge portion 23 extending radially inward from the lower end portion of the cylindrical portion 22. The instrument body 21 is made of, for example, a metal material having high thermal conductivity. In the present embodiment, as an example, the appliance main body 21 is made of an aluminum alloy, and the heat generated from the power supply unit 31 and the light source unit 41 can be dissipated. The maximum inner diameter of the instrument body 21 is larger than the outer diameter of the mounting member 91, and the instrument body 21 can be mounted on the irradiation surface side of the mounting member 91. The instrument body 21 has a plurality of (three in this embodiment) positioning portions 22a having a rectangular shape and a convex shape on the inner peripheral surface of the cylindrical portion 22, and an upper end portion of the cylindrical portion 22 corresponding to each positioning portion 22a. A plurality of (three in this embodiment) locking portions 22b having a substantially rectangular shape and a convex shape in the side view, and a substantially rectangular shape in the side view provided at the lower end of the cylindrical portion 22 corresponding to each positioning portion 22a. It has a plurality of convex lower end convex portions 22c (three in the present embodiment). The positioning portion 22a, the locking portion 22b, and the lower end convex portion 22c are formed on the inner peripheral surface of the cylindrical portion 22 at substantially equal intervals along the circumferential direction. The upper end portion of the positioning portion 22a regulates the position of the lower end portion of the locked portion 94 (guide portion 94b) of the mounting member 91 when the appliance main body 21 is attached to the mounting member 91. The lower end portion of the positioning portion 22a regulates the position of the upper end portion of the light source setting portion 81 (light source portion 41) when the light source setting portion 81 is attached to the instrument main body 21. As a result, the light source setting unit 81 (light source unit 41) can be held at a predetermined position on the bottom of the instrument main body 21.
器具本体２１の内縁部２３は、導光部材５１の照射面側の外周縁部と対向する。内縁部２３は、平面視においてＬＥＤ素子４２の径方向内側の縁部と重なる反射部２３ａを有している。反射部２３ａは、器具本体２１に環状反射部材７１を組付けた際に、環状反射部材７１の内周縁よりも径方向内側に延出される部分である。具体的には、反射部２３ａは、取付面側に反射面を有し、ＬＥＤ素子４２から出射して導光部材５１を透過した光を反射する部分である。また、反射部２３ａは、ＬＥＤ素子４２の少なくとも一部と重なるように配置されることで、ＬＥＤ素子４２が発する光の直接光を遮るため、ユーザーの目に直接ＬＥＤ素子４２が発する光が達することを抑えることできる。これにより、照明光のムラを抑えるとともに、グレアを軽減した照明光を得ることができる。反射部２３ａは、導光部材５１を器具本体２１内に配置された環状反射部材７１に組み付けた際に、導光部材５１の照射面側の外周縁部に当接または近接する部分である。
なお、本実施形態では、反射部２３ａは、内縁部２３と一体的な部材として構成しているが、例えば、反射部を別部材として構成し、内縁部に連設してもよい。
また、反射部２３ａには、例えば必要に応じて、周方向に沿って溝部を設けて、この溝部に沿って円環状のパッキンを配置してもよい。パッキンは、器具本体２１（反射部２３ａ）と導光部材５１の隙間を覆うためのものであり、水滴や埃等が照明器具１１の内部への侵入することを防ぐ、いわゆる気密パッキンとして作用する。
The inner edge portion 23 of the instrument main body 21 faces the outer peripheral edge portion of the light guide member 51 on the irradiation surface side. The inner edge portion 23 has a reflecting portion 23a that overlaps with the radial inner edge portion of the LED element 42 in a plan view. The reflecting portion 23a is a portion that extends radially inward from the inner peripheral edge of the annular reflecting member 71 when the annular reflecting member 71 is assembled to the instrument main body 21. Specifically, the reflecting portion 23a is a portion that has a reflecting surface on the mounting surface side and reflects light emitted from the LED element 42 and transmitted through the light guide member 51. Further, since the reflecting portion 23a is arranged so as to overlap at least a part of the LED element 42, the direct light of the light emitted by the LED element 42 is blocked, so that the light emitted by the LED element 42 directly reaches the user's eyes. It can be suppressed. As a result, it is possible to obtain illumination light with reduced glare while suppressing unevenness of the illumination light. The reflection portion 23a is a portion that comes into contact with or is close to the outer peripheral edge portion of the light guide member 51 on the irradiation surface side when the light guide member 51 is assembled to the annular reflection member 71 arranged in the instrument main body 21.
In the present embodiment, the reflecting portion 23a is configured as an integral member with the inner edge portion 23, but for example, the reflecting portion may be configured as a separate member and continuously provided at the inner edge portion.
Further, for example, the reflecting portion 23a may be provided with a groove portion along the circumferential direction, and an annular packing may be arranged along the groove portion, if necessary. The packing is for covering the gap between the fixture body 21 (reflecting portion 23a) and the light guide member 51, and acts as a so-called airtight packing that prevents water droplets, dust, etc. from entering the inside of the lighting fixture 11. ..
位置決め部２２ａの１つには、位置決め部２２ａの表面から径方向内側に突出するネジ固定部２４が設けられている。ネジ固定部２４は、電源カバー３３のネジ取付部３３ｂと光源セット部８１のカバー取付部８４とをネジ等の取付部材により共締めするための部分である。
One of the positioning portions 22a is provided with a screw fixing portion 24 protruding inward in the radial direction from the surface of the positioning portion 22a. The screw fixing portion 24 is a portion for jointly tightening the screw mounting portion 33b of the power supply cover 33 and the cover mounting portion 84 of the light source setting portion 81 with mounting members such as screws.
円筒部２２の内周面には、上下方向に平行に並ぶ２列の突条部２２ｄ・２２ｄが設けられている。突条部２２ｄは、径方向内側に向かって突出する部分である。突条部２２ｄは、上面視において略三角形状であり、傾斜角度が異なる第１傾斜面２２ｄ１と、第２傾斜面２２ｄ２を有している（図７参照）。第１傾斜面２２ｄ１は、被取付部Ｃに平行な断面において器具本体２１を回動させる方向に向かうにつれて器具本体２１の径方向内側に向かうように傾斜する傾斜面である。第１傾斜面２２ｄ１は、傾斜角度が相対的に小さくて勾配が相対的に緩やかな緩斜面(例えば円筒部２２の内周面に対して１０〜３０度の斜面)である。第２傾斜面２２ｄ２は、傾斜角度が相対的に大きくて勾配が相対的に急な急斜面(例えば円筒部２２の内周面に対して６０〜８５度の斜面)である。突条部２２ｄは、円筒部２２の下端部から上下方向に沿って円筒部２２の上端近傍まで延設される。突条部２２ｄは、器具本体２１を取付部材９１に取り付ける際に、後述する器具本体２１の弾性係合部９５が係合される被係合部分である。
なお、本実施形態では、突条部２２ｄを２列設けているが、１列もしくは３列以上であってもよい。また、本実施形態では、２列の突条部２２ｄ・２２ｄを同形状に形成したが、異なる形状に形成してもよい。例えば、一方の突条部２２ｄを他方の突条部２２ｄよりも内周面側に突出する寸法を大きく形成してもよい。器具本体２１を取付部材９１に取り付ける際に、弾性係合部９５が最初に乗り越える突条部２２ｄの内周面側に突出する寸法を大きく形成させることで、他方の突条部２２ｄよりも弾性係合部９５が乗り越えにくくすることができる。器具本体２１を取り付ける際に最初に乗り越える突条部２２ｄを乗り越えにくくさせることで、その後に乗り越える突条部２２ｄは最初の突条部２２ｄよりも少ない力で弾性係合部９５を乗り越えさせられることができる。これにより、弾性係合部９５が一方の突条部２２ｄのみ乗り越えた状態の取り付け不良を抑止することができる。
Two rows of ridges 22d and 22d arranged in parallel in the vertical direction are provided on the inner peripheral surface of the cylindrical portion 22. The ridge portion 22d is a portion that protrudes inward in the radial direction. The ridge portion 22d has a substantially triangular shape when viewed from above, and has a first inclined surface 22d1 and a second inclined surface 22d2 having different inclination angles (see FIG. 7). The first inclined surface 22d1 is an inclined surface that inclines so as to go inward in the radial direction of the instrument main body 21 as the instrument main body 21 is rotated in a cross section parallel to the attached portion C. The first inclined surface 22d1 is a gentle slope having a relatively small inclination angle and a relatively gentle slope (for example, a slope of 10 to 30 degrees with respect to the inner peripheral surface of the cylindrical portion 22). The second inclined surface 22d2 is a steep slope having a relatively large inclination angle and a relatively steep slope (for example, a slope of 60 to 85 degrees with respect to the inner peripheral surface of the cylindrical portion 22). The ridge portion 22d extends from the lower end portion of the cylindrical portion 22 to the vicinity of the upper end portion of the cylindrical portion 22 along the vertical direction. The ridge portion 22d is an engaged portion to which the elastic engaging portion 95 of the instrument main body 21, which will be described later, is engaged when the instrument main body 21 is attached to the mounting member 91.
In the present embodiment, the protrusions 22d are provided in two rows, but the number of ridges 22d may be one row or three or more rows. Further, in the present embodiment, the two rows of ridge portions 22d and 22d are formed in the same shape, but they may be formed in different shapes. For example, one ridge portion 22d may be formed to have a larger dimension so as to project toward the inner peripheral surface side than the other ridge portion 22d. When the instrument body 21 is attached to the mounting member 91, the elastic engaging portion 95 is formed to have a larger dimension protruding toward the inner peripheral surface side of the ridge portion 22d that is first overcome, so that it is more elastic than the other ridge portion 22d. The engaging portion 95 can be made difficult to get over. By making it difficult to get over the ridge portion 22d that is first overcome when attaching the instrument body 21, the ridge portion 22d that is overcome after that can get over the elastic engaging portion 95 with less force than the first ridge portion 22d. Can be done. As a result, it is possible to prevent a mounting failure in a state where the elastic engaging portion 95 gets over only one of the ridge portions 22d.
詳細は後述するが、器具本体２１は、内部の清掃や器具本体２１の部品交換等のために、取付部材９１に対して着脱できる構造となっている。
また、器具本体２１の材質としては、アルミニウム合金以外であってもよく、例えばアルミニウム合金以外の金属素材、樹脂など必要に応じて適宜素材を選択することもできる。
Although the details will be described later, the instrument body 21 has a structure that can be attached to and detached from the mounting member 91 for cleaning the inside and replacing parts of the instrument body 21.
Further, the material of the instrument main body 21 may be other than the aluminum alloy, and for example, a metal material other than the aluminum alloy, a resin, or the like can be appropriately selected as needed.
電源部３１は、光源部４１が有するＬＥＤ素子４２に給電を行って、ＬＥＤ素子４２を点灯させるための電源装置である。電源部３１は、器具本体２１における光源部４１よりも上方（取付面側）に配置されている。電源部３１は、電源回路部３２と、該電源回路部３２を覆う電源カバー３３を有している。電源回路部３２は、直方体形状のケース部３２ａと、ケース部３２ａの内部に配置され、所定形状に加工されたプリント配線基板上に複数の電子部品が実装された電源回路３２ｂを有している。電源カバー３３は、平面視略半円形状の金属製の板状部材である。電源カバー３３は、平面視において電源回路部３２に重なるように配置されている。電源カバー３３は、係止片３３ａと、円弧形状の外周縁側にネジ孔を備えたネジ取付部３３ｂを有している。係止片３３ａは、光源セット部８１のカバー係止部８３に係止される。ネジ取付部３３ｂは、光源セット部８１のカバー取付部８４を介して器具本体２１のネジ固定部２４にネジ等の取付部材により共締めされる。電源部３１は、外部商用電源から供給される交流電流を所定の直流電流に変換し、変換後の電流を基板４３に実装された複数のＬＥＤ素子４２に供給するためのものである。
The power supply unit 31 is a power supply device for supplying power to the LED element 42 included in the light source unit 41 to light the LED element 42. The power supply unit 31 is arranged above the light source unit 41 in the instrument main body 21 (on the mounting surface side). The power supply unit 31 has a power supply circuit unit 32 and a power supply cover 33 that covers the power supply circuit unit 32. The power supply circuit unit 32 has a rectangular parallelepiped case portion 32a and a power supply circuit 32b arranged inside the case portion 32a and having a plurality of electronic components mounted on a printed wiring board processed into a predetermined shape. .. The power supply cover 33 is a metal plate-shaped member having a substantially semicircular shape in a plan view. The power supply cover 33 is arranged so as to overlap the power supply circuit unit 32 in a plan view. The power supply cover 33 has a locking piece 33a and a screw mounting portion 33b having a screw hole on the outer peripheral edge side of an arc shape. The locking piece 33a is locked to the cover locking portion 83 of the light source setting portion 81. The screw mounting portion 33b is fastened together with a mounting member such as a screw to the screw fixing portion 24 of the instrument main body 21 via the cover mounting portion 84 of the light source setting portion 81. The power supply unit 31 is for converting an alternating current supplied from an external commercial power source into a predetermined direct current and supplying the converted current to a plurality of LED elements 42 mounted on the substrate 43.
電源部３１は、配線（図示せず）を介して端子台１００に電気的に接続されている。例えば、照明器具１１を被取付部Ｃに取り付ける際、天井裏側の外部商用電源の電源電線（図示せず）を端子台１００に接続することで、電源部３１は外部商用電源と電気的に接続される。電源部３１と光源部４１は配線３７によって電気的に接続されている。
なお、本実施形態では、端子台１００を使用しているが、特に限定するものではない。例えば、端子台１００を使用する代わりに、コネクタ等の接続部品を使用する構成とすることもできる。
The power supply unit 31 is electrically connected to the terminal block 100 via wiring (not shown). For example, when the lighting fixture 11 is attached to the attached portion C, the power supply portion 31 is electrically connected to the external commercial power source by connecting the power supply wire (not shown) of the external commercial power source on the back side of the ceiling to the terminal block 100. Will be done. The power supply unit 31 and the light source unit 41 are electrically connected by wiring 37.
Although the terminal block 100 is used in this embodiment, it is not particularly limited. For example, instead of using the terminal block 100, a connection component such as a connector may be used.
光源部４１は、照明器具１１の照射面側に向けて光を出射する部分である。光源部４１は、光源である発光素子を有する光源モジュールである。本実施形態においては、発光素子として、基板４３上に複数の光源であるＬＥＤ（Ｌｉｇｈｔ ｅｍｉｔｔｉｎｇ ｄｉｏｄｅ）素子４２が表面実装されたＬＥＤ光源モジュールを使用している。具体的には、ＬＥＤ光源モジュールは、略円板状に加工された基板４３表面に、複数のＬＥＤ素子４２が周方向に等間隔に配列されたモジュールである。複数のＬＥＤ素子４２は、基板４３の外周縁の近傍に円環状の素子列として実装されている。光源部４１は、基板４３上に給電素子４４を有している。給電素子４４は、複数のＬＥＤ素子４２のうち二つのＬＥＤ素子４２の間に配置される。これにより、給電素子４４を配置するスペースを基板４３上に別途設ける必要がなく、基板４３をコンパクトにすることができる。光源部４１は、光源セット部８１の照射面側に配置される。複数のＬＥＤ素子４２は、導光部材５１の取付面側の外周端近傍に対向するように配置される。ＬＥＤ光源モジュールは、配線３７によって電源部３１と電気的に接続されている。ＬＥＤ光源モジュールは、基板４３の実装面の裏面が光源セット部８１の光源配置面８２に当接して配置されるため、ＬＥＤ光源モジュールが発熱した際には、ＬＥＤ光源モジュールの熱が光源セット部８１に伝わる。光源セット部８１に伝わった熱は、光源セット部８１の取付面側の周辺温度が光源セット部８１の温度よりも低い場合、光源セット部８１の取付面側の周辺の空気へ伝わる。また、光源セット部８１に伝わった熱の一部は、器具本体２１に伝わり、器具本体２１の周辺温度が器具本体２１の温度よりも低い場合、器具本体２１の周辺の空気へ伝わる。これにより、光源セット部８１に伝わった熱は、光源セット部８１や器具本体２１の周囲に放熱される。
The light source unit 41 is a portion that emits light toward the irradiation surface side of the luminaire 11. The light source unit 41 is a light source module having a light emitting element which is a light source. In the present embodiment, as the light emitting element, an LED light source module in which LED (Light emittering diode) elements 42, which are a plurality of light sources, are surface-mounted on the substrate 43 is used. Specifically, the LED light source module is a module in which a plurality of LED elements 42 are arranged at equal intervals in the circumferential direction on the surface of a substrate 43 processed into a substantially disk shape. The plurality of LED elements 42 are mounted as an annular element array in the vicinity of the outer peripheral edge of the substrate 43. The light source unit 41 has a power feeding element 44 on the substrate 43. The power feeding element 44 is arranged between two LED elements 42 among the plurality of LED elements 42. As a result, it is not necessary to separately provide a space for arranging the power feeding element 44 on the substrate 43, and the substrate 43 can be made compact. The light source unit 41 is arranged on the irradiation surface side of the light source setting unit 81. The plurality of LED elements 42 are arranged so as to face each other in the vicinity of the outer peripheral end on the mounting surface side of the light guide member 51. The LED light source module is electrically connected to the power supply unit 31 by wiring 37. Since the back surface of the mounting surface of the substrate 43 of the LED light source module is arranged in contact with the light source arrangement surface 82 of the light source setting portion 81, when the LED light source module generates heat, the heat of the LED light source module is transferred to the light source setting portion. It is transmitted to 81. When the ambient temperature on the mounting surface side of the light source setting unit 81 is lower than the temperature of the light source setting unit 81, the heat transferred to the light source setting unit 81 is transferred to the air around the mounting surface side of the light source setting unit 81. Further, a part of the heat transferred to the light source setting unit 81 is transmitted to the instrument body 21, and when the ambient temperature of the instrument body 21 is lower than the temperature of the instrument body 21, it is transmitted to the air around the instrument body 21. As a result, the heat transferred to the light source setting unit 81 is dissipated to the surroundings of the light source setting unit 81 and the instrument main body 21.
なお、本実施形態では、光源として表面実装型のＬＥＤ素子４２を用いたが、光源の種類はＬＥＤ素子に限定されず、例えばＣＯＢ型発光モジュールや有機ＥＬ素子（ＯＬＥＤ）などを用いても実現可能である。
また、基板４３は、熱伝導性シート（図示せず）や放熱グリスを介して光源セット部８１の光源配置面８２に取り付けてもよく、これにより、より高い放熱性を得ることもできる。
In the present embodiment, the surface mount type LED element 42 is used as the light source, but the type of the light source is not limited to the LED element, and can be realized by using, for example, a COB type light emitting module or an organic EL element (OLED). It is possible.
Further, the substrate 43 may be attached to the light source arranging surface 82 of the light source setting portion 81 via a heat conductive sheet (not shown) or thermal paste, whereby higher heat dissipation can be obtained.
導光部材５１は、少なくとも光源部４１の照射面側を覆うように器具本体２１に取り付けられ、光源部４１（ＬＥＤ素子４２）から出射された光を反射及び拡散させつつ導光し、導光部材５１の外部へ出射される光を配光制御する透光性部材である。導光部材５１の外周縁は、平面視において円環状に実装された複数のＬＥＤ素子４２と重なるように配置される。導光部材５１は、光源部４１（ＬＥＤ素子４２）から出射された光を導光して、面発光として導光部材５１の外部に出射可能である。導光部材５１は、円板状の部材である。導光部材５１は、透光性を有する樹脂素材で形成されている。導光部材５１は、拡散処理がなされている。本実施形態の導光部材５１においては、器具本体２１の開口から露出する照射面側の表面に対し、ドットパターンで白色（半透光性）のシルク印刷にて印刷層を形成させた。導光部材５１は、ドットパターンの印刷層を形成したものに限らず、例えば、ドットパターン以外の印刷層を形成したもの、微細な凹凸を表面に形成したシボ加工（フロスト加工）を施したもの、内部に拡散剤を混入させたもの、拡散反射シートを貼り付けたもので構成することもできる。また、導光部材５１の照射面側に拡散部材を別途設けてもよい。導光部材５１は、テーパ部５２と、照射面側に突出する凸部５３と、凸部５３の反対側の面に凹部５４とを有している。テーパ部５２は、導光部材５１の外周縁部から下方に向かうにつれて縮径するテーパ状の部分である。凸部５３は、テーパ部５２における光源部４１の給電素子４４に対応する位置で当該テーパ部５２から径方向外側に向けて突出する部分である。凸部５３は、環状反射部材７１の切欠き部７４に係合可能であり、環状反射部材７１に導光部材５１を取り付ける際に、導光部材５１の位置決めをすることができる。導光部材５１は、その外径寸法が環状反射部材７１の外径寸法よりも小さく、該環状反射部材７１のテーパ面７３に係止可能である。凹部５４は、光源部４１の給電素子４４に対応する位置に照射面側に凸となるように形成される。凹部５４は、光源部４１を配置する際に給電素子４４と係合することができ、光源部４１を導光部材５１における適正な位置に位置決めすることができる。導光部材５１は、器具本体２１の下方の開口を閉塞して、ＬＥＤ素子４２に埃などが付着することを防止する役割も有している。
The light guide member 51 is attached to the instrument main body 21 so as to cover at least the irradiation surface side of the light source unit 41, and guides the light emitted from the light source unit 41 (LED element 42) while reflecting and diffusing it to guide the light. It is a translucent member that controls the light distribution of the light emitted to the outside of the member 51. The outer peripheral edge of the light guide member 51 is arranged so as to overlap the plurality of LED elements 42 mounted in an annular shape in a plan view. The light guide member 51 can guide the light emitted from the light source unit 41 (LED element 42) and emit it to the outside of the light guide member 51 as surface emission. The light guide member 51 is a disk-shaped member. The light guide member 51 is made of a translucent resin material. The light guide member 51 is diffused. In the light guide member 51 of the present embodiment, a print layer is formed by white (semipermeable) silk printing in a dot pattern on the surface on the irradiation surface side exposed from the opening of the instrument main body 21. The light guide member 51 is not limited to the one in which the print layer of the dot pattern is formed, for example, the one in which the print layer other than the dot pattern is formed, and the one in which the surface is textured (frosted) with fine irregularities. , A diffuser is mixed inside, or a diffuse reflection sheet is attached. Further, a diffusion member may be separately provided on the irradiation surface side of the light guide member 51. The light guide member 51 has a tapered portion 52, a convex portion 53 projecting toward the irradiation surface side, and a concave portion 54 on the surface opposite to the convex portion 53. The tapered portion 52 is a tapered portion whose diameter is reduced downward from the outer peripheral edge portion of the light guide member 51. The convex portion 53 is a portion of the tapered portion 52 that projects outward in the radial direction from the tapered portion 52 at a position corresponding to the feeding element 44 of the light source portion 41. The convex portion 53 can be engaged with the notch portion 74 of the annular reflection member 71, and the light guide member 51 can be positioned when the light guide member 51 is attached to the annular reflection member 71. The light guide member 51 has an outer diameter dimension smaller than that of the annular reflection member 71, and can be locked to the tapered surface 73 of the annular reflection member 71. The recess 54 is formed so as to be convex toward the irradiation surface at a position corresponding to the power feeding element 44 of the light source unit 41. The recess 54 can be engaged with the power feeding element 44 when arranging the light source unit 41, and the light source unit 41 can be positioned at an appropriate position on the light guide member 51. The light guide member 51 also has a role of closing the opening below the instrument main body 21 to prevent dust and the like from adhering to the LED element 42.
反射部材（第１反射部材）６１は、導光部材５１と対向する位置に配置され、ＬＥＤ素子４２から出射された光を反射する部材である。反射部材６１は、平面視略円形状でシート形状である。反射部材６１は、導光部材５１の取付面側に載置された状態で配置される。反射部材６１は、導光部材５１の取付面側（背面側）から出てきた光を導光部材５１の内部に向けて反射させる。反射部材６１は、ＬＥＤ素子４２から出射された光、及び導光部材５１の内壁面で反射された光を反射して照射面側に出射する。反射部材６１は、略円板状であり、切欠き部６２と、延出片６３を有している。切欠き部６２は、反射部材６１の外周縁において矩形状に切り欠かれた部分である。切欠き部６２は、光源部４１の給電素子４４が係合される部分である。延出片６３は、反射部材６１の外周縁において径方向に対向するともに、径方向外側に延出される一対の部分である。延出片６３・６３は、それぞれその先端が環状反射部材７１の取付面側の凹部７７・７７に係合するように配置されて位置決めされる。切欠き部６２に対して光源部４１の給電素子４４を係合するように光源部４１を配置することで、反射部材６１と光源部４１の位置決めをすることができる。このとき延出片６３・６３は、所定のＬＥＤ素子４２の間にそれぞれ配置されて、ＬＥＤ素子４２と重なることなく配置される。反射部材６１は、基板４３の照射面側の表面において円環状に実装された複数のＬＥＤ素子４２の径方向内側の領域に配置される。本実施形態では、反射部材６１は、その外周縁が複数のＬＥＤ素子４２に近接して配置されている。これにより、複数のＬＥＤ素子４２は、反射部材６１に覆われていない導光部材５１の外周縁部から内部に光を入射させることができる構成となっている。
The reflection member (first reflection member) 61 is a member that is arranged at a position facing the light guide member 51 and reflects the light emitted from the LED element 42. The reflective member 61 has a substantially circular shape in a plan view and a sheet shape. The reflection member 61 is arranged in a state of being mounted on the mounting surface side of the light guide member 51. The reflecting member 61 reflects the light emitted from the mounting surface side (rear surface side) of the light guide member 51 toward the inside of the light guide member 51. The reflecting member 61 reflects the light emitted from the LED element 42 and the light reflected by the inner wall surface of the light guide member 51 and emits the light toward the irradiation surface side. The reflective member 61 has a substantially disk shape, and has a notch portion 62 and an extension piece 63. The notch portion 62 is a portion notched in a rectangular shape on the outer peripheral edge of the reflective member 61. The notch portion 62 is a portion in which the power feeding element 44 of the light source portion 41 is engaged. The extending piece 63 is a pair of portions that face each other in the radial direction on the outer peripheral edge of the reflective member 61 and extend outward in the radial direction. The extension pieces 63 and 63 are arranged and positioned so that their tips thereof engage with the recesses 77 and 77 on the mounting surface side of the annular reflection member 71, respectively. By arranging the light source unit 41 so as to engage the power feeding element 44 of the light source unit 41 with the notch portion 62, the reflection member 61 and the light source unit 41 can be positioned. At this time, the extension pieces 63 and 63 are arranged between the predetermined LED elements 42, respectively, and are arranged without overlapping with the LED elements 42. The reflective member 61 is arranged in a radial inner region of a plurality of LED elements 42 mounted in an annular shape on the surface of the substrate 43 on the irradiation surface side. In the present embodiment, the outer peripheral edge of the reflective member 61 is arranged close to the plurality of LED elements 42. As a result, the plurality of LED elements 42 are configured so that light can be incident on the inside from the outer peripheral edge portion of the light guide member 51 which is not covered by the reflection member 61.
なお、本実施形態では、反射部材６１は、基板４３と別体の部材として構成されているが、反射部材６１の代わりに、例えば、基板４３の照射面側の表面に、白色シールの貼り付けまたは白色塗装等を実行することで反射部を構成することもできる。
In the present embodiment, the reflective member 61 is configured as a member separate from the substrate 43, but instead of the reflective member 61, for example, a white sticker is attached to the surface of the substrate 43 on the irradiation surface side. Alternatively, the reflective portion can be configured by performing white coating or the like.
また、反射部材６１は、例えば外周縁部に照射面側に向けて突出する円柱状の凸部を設けて、導光部材５１に設けた凹部に係合可能となるように構成し、導光部材５１に対する反射部材６１の位置決めが容易にできるように構成してもよい。
Further, the reflective member 61 is configured so that, for example, a columnar convex portion projecting toward the irradiation surface side is provided on the outer peripheral edge portion so as to be engaged with the concave portion provided in the light guide member 51. It may be configured so that the reflective member 61 can be easily positioned with respect to the member 51.
環状反射部材(第２反射部材)７１は、導光部材５１の外周縁の外側に配置され、当該外周縁を囲う反射部材である。環状反射部材７１は、円環状で樹脂製の部材である。環状反射部材７１は、外枠部７２と、テーパ面７３と、切欠き部７４と、配線配置部７５と、切欠き部７６と、凹部７７とを有している。外枠部７２は、略円筒状の部分である。テーパ面７３は、環状反射部材７１の内周側に設けられ、内周側縁部から上方に向かうにつれて拡径する傾斜面である。テーパ面７３は、ＬＥＤ素子４２の下方に配置されている。テーパ面７３は、導光部材５１のテーパ部５２から出る光を反射させる反射面である。テーパ面７３には、導光部材５１のテーパ部５２が当接して配置される。切欠き部７４は、テーパ面７３の一部が矩形状に切り欠かれた部分であり、導光部材５１の凸部５３が係合する部分である。環状反射部材７１の高さ寸法は、導光部材５１の上面に反射部材６１を配置した状態の高さ寸法よりも大きくなるように構成されている。切欠き部７６は、外枠部７２の一部を切り欠いた部分である。切欠き部７６は、複数（本実施形態では３箇所）設けられ、器具本体２１の下端凸部２２ｃと係合することができる。下端凸部２２ｃと切欠き部７６を係合させることによって、環状反射部材７１を器具本体２１における所定の位置に配置することができる。凹部７７は、上述したように、反射部材６１の延出片６３の先端と係合する部分であり、反射部材６１を位置決めすることができる。なお、凹部７７は、必須の構成ではない。導光部材５１の取付面側の表面に白色シール等を貼り付けて反射部を形成した場合には不要となる。
The annular reflective member (second reflective member) 71 is a reflective member that is arranged outside the outer peripheral edge of the light guide member 51 and surrounds the outer peripheral edge. The annular reflection member 71 is an annular member made of resin. The annular reflection member 71 has an outer frame portion 72, a tapered surface 73, a notch portion 74, a wiring arrangement portion 75, a notch portion 76, and a recess 77. The outer frame portion 72 is a substantially cylindrical portion. The tapered surface 73 is an inclined surface provided on the inner peripheral side of the annular reflection member 71 and whose diameter increases upward from the inner peripheral side edge portion. The tapered surface 73 is arranged below the LED element 42. The tapered surface 73 is a reflecting surface that reflects light emitted from the tapered portion 52 of the light guide member 51. The tapered portion 52 of the light guide member 51 is arranged in contact with the tapered surface 73. The notch portion 74 is a portion of the tapered surface 73 that is notched in a rectangular shape, and is a portion with which the convex portion 53 of the light guide member 51 engages. The height dimension of the annular reflective member 71 is configured to be larger than the height dimension when the reflective member 61 is arranged on the upper surface of the light guide member 51. The cutout portion 76 is a portion cut out from a part of the outer frame portion 72. A plurality of cutout portions 76 (three locations in the present embodiment) are provided and can be engaged with the lower end convex portion 22c of the instrument main body 21. By engaging the lower end convex portion 22c with the notch portion 76, the annular reflection member 71 can be arranged at a predetermined position on the instrument main body 21. As described above, the recess 77 is a portion that engages with the tip of the extension piece 63 of the reflection member 61, and the reflection member 61 can be positioned. The recess 77 is not an essential configuration. It becomes unnecessary when a white sticker or the like is attached to the surface of the light guide member 51 on the mounting surface side to form a reflective portion.
環状反射部材７１は、照明器具１１を組み立てる際に、器具本体２１の内部の下端隅部に最初に組み付けられる部材である。まず、下端凸部２２ｃに対して切欠き部７６を係合させるように環状反射部材７１を器具本体２１に組み付ける。これにより、環状反射部材７１を器具本体２１における適切な位置に位置決めして配置することができる。器具本体２１に環状反射部材７１が組み付けられた状態において、テーパ面７３と器具本体２１の反射部２３ａは、導光部材５１の外周縁部の形状に対応した受け部を構成し、当該受け部に導光部材５１が嵌合される。これにより、導光部材５１を容易に適切な位置に位置決めして、配置することができる。凹部７７と延出片６３の先端を係合させるように反射部材６１を配置する。これにより、反射部材６１を容易に適切な位置に位置決めして配置することができる。
The annular reflection member 71 is a member that is first assembled to the lower end corner inside the fixture body 21 when the lighting fixture 11 is assembled. First, the annular reflection member 71 is assembled to the instrument main body 21 so that the notch portion 76 is engaged with the lower end convex portion 22c. As a result, the annular reflection member 71 can be positioned and arranged at an appropriate position on the instrument main body 21. In a state where the annular reflective member 71 is assembled to the instrument main body 21, the tapered surface 73 and the reflective portion 23a of the instrument main body 21 form a receiving portion corresponding to the shape of the outer peripheral edge portion of the light guide member 51, and the receiving portion. The light guide member 51 is fitted into the light guide member 51. As a result, the light guide member 51 can be easily positioned and arranged at an appropriate position. The reflective member 61 is arranged so that the recess 77 and the tip of the extension piece 63 are engaged with each other. As a result, the reflective member 61 can be easily positioned and arranged at an appropriate position.
外枠部７２は、光源部４１の給電素子４４から延びる配線３７に対応する位置において矩形状の切欠きである配線配置部７５を有している。配線配置部７５は配線３７を配置するためのものである。この配線配置部７５を設けることにより、配線３７を光源セット部８１の取付面側（背面側）に延ばすことが容易となり、電源部３１に接続し易くなる。
The outer frame portion 72 has a wiring arrangement portion 75 which is a rectangular notch at a position corresponding to the wiring 37 extending from the power feeding element 44 of the light source portion 41. The wiring arrangement portion 75 is for arranging the wiring 37. By providing the wiring arrangement portion 75, it becomes easy to extend the wiring 37 toward the mounting surface side (back side) of the light source setting portion 81, and it becomes easy to connect to the power supply unit 31.
また、本実施形態では、器具本体２１の内部に環状反射部材７１、導光部材５１、反射部材６１を順に組み付けた際に、導光部材５１の外周縁部の上部に断面視凹状で平面視円環状の素子収容部Ｓが形成される。素子収容部Ｓには、光源である複数のＬＥＤ素子４２が収容される。さらに、環状反射部材７１は導光部材５１の側面部の周囲を覆うとともに、反射部材６１は素子収容部Ｓを除く導光部材５１の上面を覆うように配置される。さらに、器具本体２１の反射部２３ａは、導光部材５１の照射面側において複数のＬＥＤ素子４２よりも径方向内側の領域を覆っている。このように構成することで、光源である複数のＬＥＤ素子４２と導光部材５１との間にほとんど距離（空間)を設けることなく、ＬＥＤ素子４２から出射される光を導光部材５１の内部の導くことができる。これにより、光源であるＬＥＤ素子４２、導光部材５１、反射部材６１及び環状反射部材７１の高さ寸法を抑えることができるため、ひいては照明器具１１の高さ寸法の増大化を防ぐことができる。また、このような構成によれば、導光部材５１の外周縁部である素子収容部Ｓのみから導光部材５１の内部にＬＥＤ素子４２から出る光を入射することができるため、入射光を効率的に導光可能となる。こうして、本実施形態の照明器具１１によれば、薄型でありながら均一性を高めた照明光を得ることができる。
Further, in the present embodiment, when the annular reflection member 71, the light guide member 51, and the reflection member 61 are assembled in this order inside the instrument main body 21, the light guide member 51 has a concave cross section and a plan view on the upper part of the outer peripheral edge portion. An annular element accommodating portion S is formed. A plurality of LED elements 42, which are light sources, are accommodated in the element accommodating portion S. Further, the annular reflection member 71 is arranged so as to cover the periphery of the side surface portion of the light guide member 51, and the reflection member 61 covers the upper surface of the light guide member 51 excluding the element accommodating portion S. Further, the reflective portion 23a of the instrument main body 21 covers a region radially inside the plurality of LED elements 42 on the irradiation surface side of the light guide member 51. With this configuration, the light emitted from the LED element 42 is emitted from the inside of the light guide member 51 with almost no distance (space) provided between the plurality of LED elements 42 which are light sources and the light guide member 51. Can be guided. As a result, the height dimensions of the LED element 42, the light guide member 51, the reflection member 61, and the annular reflection member 71, which are light sources, can be suppressed, and thus it is possible to prevent the height dimension of the luminaire 11 from increasing. .. Further, according to such a configuration, the light emitted from the LED element 42 can be incident inside the light guide member 51 only from the element accommodating portion S which is the outer peripheral edge portion of the light guide member 51, so that the incident light can be emitted. It becomes possible to guide light efficiently. In this way, according to the luminaire 11 of the present embodiment, it is possible to obtain illuminating light that is thin but has improved uniformity.
光源セット部８１は、略円板状の金属製の部材である。光源セット部８１は、照射面側の略全面に亘って光源部４１と対向して光源部４１の高さ方向の位置を規制する面である光源配置面８２を有している。光源セット部８１には、光源配置面８２に光源部４１が配置され、取付面側に電源部３１及び端子台１００が配置される。光源配置面８２は、光源部４１から生じる熱を伝えるために、基板４３との接触面積を増やすために平らな表面を有するように形成されている。光源セット部８１は、取付面側に、カバー係止部８３、カバー取付部８４、端子台取付部８５、を有している。カバー係止部８３は、電源カバー３３の係止片３３ａが係止される部分である。係止片３３ａをカバー係止部８３に係止させることで、光源セット部８１における適切な位置に電源カバー３３を位置決めすることができる。カバー取付部８４は、光源セット部８１の外周縁からＬ字状に立設した部分の上面部分であり、ネジ孔が開口されている。端子台取付部８５は、端子台１００が取り付けられる部分である。
The light source set portion 81 is a substantially disk-shaped metal member. The light source setting unit 81 has a light source arrangement surface 82 which is a surface which faces the light source unit 41 and regulates the position of the light source unit 41 in the height direction over substantially the entire surface on the irradiation surface side. In the light source setting unit 81, the light source unit 41 is arranged on the light source arrangement surface 82, and the power supply unit 31 and the terminal block 100 are arranged on the mounting surface side. The light source arranging surface 82 is formed to have a flat surface in order to increase the contact area with the substrate 43 in order to transfer the heat generated from the light source portion 41. The light source setting portion 81 has a cover locking portion 83, a cover mounting portion 84, and a terminal block mounting portion 85 on the mounting surface side. The cover locking portion 83 is a portion where the locking piece 33a of the power supply cover 33 is locked. By locking the locking piece 33a to the cover locking portion 83, the power supply cover 33 can be positioned at an appropriate position in the light source setting portion 81. The cover mounting portion 84 is an upper surface portion of a portion erected in an L shape from the outer peripheral edge of the light source setting portion 81, and has screw holes. The terminal block mounting portion 85 is a portion to which the terminal block 100 is mounted.
光源セット部８１の外周縁は、器具本体２１の円筒部２２の内周面の半径寸法と略同等の寸法である外側円弧部８６と、外側円弧部８６よりも小径で、光源セット部８１を器具本体２１の内部に収容する際に、対応する位置決め部２２ａ等を挿通可能に形成される切欠きである内側円弧部８７を有している。光源部４１及び電源部３１が取り付けられた光源セット部８１を器具本体２１に取り付ける際には、内側円弧部８７により位置決め部２２ａを通過させる。当該光源セット部８１を器具本体２１の底部に配置後、器具本体２１の周方向の一方側に所定長回動することで、外側円弧部８６が位置決め部２２ａの下方に配置される（図６参照）。具体的には、光源セット部８１のカバー取付部８４を器具本体２１のネジ固定部２４の位置まで周方向に回動させる。そうして、器具本体２１のネジ固定部２４に電源カバー３３のネジ取付部３３ｂと光源セット部８１のカバー取付部８４とを位置合わせした状態で、ネジ等の取付部材により共締めされる（図２参照）。このように、本実施形態では、器具本体２１に対して光源部４１と電源部３１を有する光源セット部８１を位置決めするともに、一つのネジ部材による固定だけで光源セット部８１を器具本体２１に安定して保持することができる。これにより、ネジ部材で固定する作業も少なく、光源セット部８１の器具本体２１への取付作業が容易となる。
The outer peripheral edge of the light source set portion 81 has an outer arc portion 86 having substantially the same radial dimension as the inner peripheral surface of the cylindrical portion 22 of the instrument body 21, and a light source set portion 81 having a diameter smaller than that of the outer arc portion 86. It has an inner arc portion 87 which is a notch formed so that a corresponding positioning portion 22a or the like can be inserted when the instrument main body 21 is housed inside. When the light source set portion 81 to which the light source portion 41 and the power supply portion 31 are attached is attached to the instrument main body 21, the positioning portion 22a is passed by the inner arc portion 87. After the light source setting portion 81 is arranged at the bottom of the instrument main body 21, the outer arc portion 86 is arranged below the positioning portion 22a by rotating the instrument main body 21 in one side in the circumferential direction for a predetermined length (FIG. 6). reference). Specifically, the cover mounting portion 84 of the light source setting portion 81 is rotated in the circumferential direction to the position of the screw fixing portion 24 of the instrument main body 21. Then, in a state where the screw mounting portion 33b of the power supply cover 33 and the cover mounting portion 84 of the light source setting portion 81 are aligned with the screw fixing portion 24 of the instrument main body 21, they are jointly tightened by a mounting member such as a screw ( (See Fig. 2). As described above, in the present embodiment, the light source set unit 81 having the light source unit 41 and the power supply unit 31 is positioned with respect to the instrument body 21, and the light source set unit 81 is attached to the instrument body 21 only by fixing with one screw member. It can be held stably. As a result, the work of fixing with the screw member is small, and the work of attaching the light source setting portion 81 to the instrument main body 21 becomes easy.
取付部材９１は、照明器具１１を被取付部Ｃに取り付ける際に、図示しないネジ等の取付部材により被取付部Ｃにあらかじめ取り付けられる、略円板状で樹脂製の部材である。取付部材９１は、器具本体２１を支持する支持部材でもあり、スタットとも呼ばれる。取付部材９１は、取付板９２、周壁部９３、被係止部９４、弾性係合部９５等を有している。
The mounting member 91 is a substantially disk-shaped resin member that is pre-mounted to the mounted portion C by a mounting member such as a screw (not shown) when the lighting fixture 11 is mounted on the mounted portion C. The mounting member 91 is also a support member that supports the instrument main body 21, and is also called a stat. The mounting member 91 includes a mounting plate 92, a peripheral wall portion 93, a locked portion 94, an elastic engaging portion 95, and the like.
取付板９２は、略円板状であり、取付部材９１を被取付部Ｃに取り付けた際に、被取付部Ｃに対向する部分である。取付板９２は、外部商用電源の電源電線（図示せず）を挿通するための貫通孔９２ａを有している。
周壁部９３は、取付板９２の外周縁から下方に延出される略円筒状の部分である。
The mounting plate 92 has a substantially disk shape, and is a portion facing the mounted portion C when the mounting member 91 is mounted on the mounted portion C. The mounting plate 92 has a through hole 92a for inserting a power line (not shown) of an external commercial power source.
The peripheral wall portion 93 is a substantially cylindrical portion extending downward from the outer peripheral edge of the mounting plate 92.
被係止部９４は、取付部材９１の外周縁部に設けられている。被係止部９４は、周壁部９３の周方向の複数箇所（本実施形態では、３箇所）に設けられている。被係止部９４は、切欠き部９４ａと、切欠き部９４ａの周方向の一端部に隣接する案内部９４ｂと、を有している。切欠き部９４ａは、周壁部９３において側面視矩形状に切り欠いた部分であり、周方向の長さ寸法が器具本体２１の係止部２２ｂの周方向の長さ寸法よりも大きくなるように形成されている。これにより、器具本体２１を取付部材９１に取り付ける際、切欠き部９４ａに器具本体２１の係止部２２ｂを係合させることで器具本体２１を位置決めすることができる。案内部９４ｂは、周壁部９３の外周面よりも径方向内側に配置される、短冊状の段差部分である。案内部９４ｂは、器具本体２１を取付部材９１に取り付ける際に器具本体２１を回動する方向に向かうにつれて被取付部Ｃ側（上方）に向かうように傾斜するテーパ面９４ｃを有している。テーパ面９４ｃは、湾曲状の面である。案内部９４ｂは、器具本体２１を取付部材９１に取り付けるために周方向に回動した際に、器具本体２１の係止部２２ｂを所定の高さ位置（係止位置）まで案内するためのものである。このように案内部９４ｂを構成することで、テーパ面９４ｃの先端側（切欠き部９４ａ側）が終端側よりも下方に下がっているため、器具本体２１の係止部２２ｂを案内部９４ｂの終端側に係止する際に係止しやすく、かつ器具本体２１を回動するだけで係止部２２ｂを所定の高さ位置（係止位置）まで案内することができる（図８Ａ参照）。
The locked portion 94 is provided on the outer peripheral edge portion of the mounting member 91. The locked portions 94 are provided at a plurality of locations (three locations in the present embodiment) in the circumferential direction of the peripheral wall portion 93. The locked portion 94 has a notch portion 94a and a guide portion 94b adjacent to one end of the notch portion 94a in the circumferential direction. The notch portion 94a is a portion of the peripheral wall portion 93 that is cut out in a rectangular shape in a side view, so that the length dimension in the circumferential direction is larger than the length dimension in the circumferential direction of the locking portion 22b of the instrument main body 21. It is formed. As a result, when the instrument body 21 is attached to the attachment member 91, the instrument body 21 can be positioned by engaging the locking portion 22b of the instrument body 21 with the notch portion 94a. The guide portion 94b is a strip-shaped step portion arranged radially inside the outer peripheral surface of the peripheral wall portion 93. The guide portion 94b has a tapered surface 94c that inclines toward the attached portion C side (upward) as the instrument main body 21 is rotated in the direction in which the instrument main body 21 is attached to the attachment member 91. The tapered surface 94c is a curved surface. The guide portion 94b is for guiding the locking portion 22b of the appliance main body 21 to a predetermined height position (locking position) when the instrument main body 21 is rotated in the circumferential direction to be attached to the mounting member 91. Is. By configuring the guide portion 94b in this way, the tip side (notch portion 94a side) of the tapered surface 94c is lowered below the end side, so that the locking portion 22b of the instrument body 21 can be moved to the guide portion 94b. It is easy to lock when locking to the terminal side, and the locking portion 22b can be guided to a predetermined height position (locking position) simply by rotating the instrument main body 21 (see FIG. 8A).
また、係止部２２ｂを案内部９４ｂにより所定の高さ位置（係止位置）まで移動した際、案内部９４ｂの下端部は、位置決め部２２ａの上端部に乗り上げるようにして位置決めされるため、取付部材９１に対して器具本体２１をガタツキ無く取り付けることができる（図８Ｂ参照）。
なお、本実施形態のテーパ面９４ｃは、湾曲面で構成されているが、湾曲面の代わりに、例えば平坦面又は途中部が屈曲した屈曲面であってもよい。
Further, when the locking portion 22b is moved to a predetermined height position (locking position) by the guide portion 94b, the lower end portion of the guide portion 94b is positioned so as to ride on the upper end portion of the positioning portion 22a. The instrument body 21 can be attached to the attachment member 91 without rattling (see FIG. 8B).
The tapered surface 94c of the present embodiment is composed of a curved surface, but instead of the curved surface, it may be, for example, a flat surface or a bent surface in which an intermediate portion is bent.
また、案内部９４ｂは、周方向において切欠き部９４ａに隣接する先端部９４ｄが角面取り加工されている（図６参照）。これにより、当該先端部９４ｄが角部の場合と比べて、器具本体２１を取り付ける際に、器具本体２１の係止部２２ｂがぶつかって、引っ掛かることを抑えることができる。
Further, in the guide portion 94b, the tip portion 94d adjacent to the notch portion 94a in the circumferential direction is chamfered (see FIG. 6). As a result, as compared with the case where the tip portion 94d is a corner portion, it is possible to prevent the locking portion 22b of the instrument main body 21 from colliding and being caught when the instrument main body 21 is attached.
弾性係合部９５は、平面視略Ｕ字形状のバネ部９６と、バネ部９６を保持するバネ保持部９７とを有している。バネ部９６は、先端部９６ａと、延長部９６ｂ・９６ｂと、基端部９６ｃ・９６ｃとを有する。先端部９６ａは、半円周形状の曲面で形成されている。先端部９６ａは、バネ部９６において径方向外側に突出している部分である。延長部９６ｂ・９６ｂは、先端部９６ａの両端からそれぞれ直線状に延びるように形成されている。基端部９６ｃ・９６ｃは、延長部９６ｂの先端部９６ａとは反対側の端部から略垂直に外側に向かうように折り曲げられてそれぞれ形成されている。バネ保持部９７は、基部９７ａと、第１凸部９７ｂ・９７ｂと、第２凸部９７ｃとを有する。基部９７ａは、取付部材９１の取付板９２の外周側の位置において下方に突出する部分である。基部９７ａは、バネ部９６の高さ方向の位置を位置決めする。第１凸部９７ｂ・９７ｂおよび第２凸部９７ｃは、基部９７ａから下方に突出する部分である。第１凸部９７ｂ・９７ｂおよび第２凸部９７ｃは、バネ部９６の変形を規制する部分である。第１凸部９７ｂ・９７ｂは、略矩形形状に形成され、バネ部９６の延長部９６ｂ・９６ｂの外側にそれぞれ配置される。第２凸部９７ｃは、平面視でハット型に形成され、外周方向に突出する台形形状を有する。第２凸部９７ｃの台形形状部分は、上底の寸法がバネ部９６の延長部９６ｂ・９６ｂ同士の距離よりも小さく、下底の寸法が延長部９６ｂ・９６ｂ同士の距離よりも大きくなるように形成されている。第２凸部９７ｃは、バネ部９６の基端部９６ｃ・９６ｃの間に配置される。弾性係合部９５は、バネ部９６が径方向外側に向けて押圧力が働くようにバネ保持部９７に保持されている。詳細は後述するが、弾性係合部９５は、バネ部９６の径方向外側の先端部９６ａが器具本体２１の突条部２２ｄに接触した際に掛かる径方向内側に向かう力に応じて出没可能に構成されている。
The elastic engaging portion 95 has a spring portion 96 having a substantially U-shape in a plan view, and a spring holding portion 97 that holds the spring portion 96. The spring portion 96 has a tip portion 96a, extension portions 96b / 96b, and a base end portion 96c / 96c. The tip portion 96a is formed of a semicircular curved surface. The tip portion 96a is a portion of the spring portion 96 that projects outward in the radial direction. The extension portions 96b and 96b are formed so as to extend linearly from both ends of the tip portion 96a, respectively. The base end portions 96c and 96c are formed by being bent so as to be substantially perpendicular to the outside from the end portion of the extension portion 96b opposite to the tip end portion 96a. The spring holding portion 97 has a base portion 97a, first convex portions 97b and 97b, and a second convex portion 97c. The base portion 97a is a portion that projects downward at a position on the outer peripheral side of the mounting plate 92 of the mounting member 91. The base portion 97a positions the position of the spring portion 96 in the height direction. The first convex portions 97b and 97b and the second convex portion 97c are portions that protrude downward from the base portion 97a. The first convex portions 97b and 97b and the second convex portion 97c are portions that regulate the deformation of the spring portion 96. The first convex portions 97b and 97b are formed in a substantially rectangular shape and are arranged outside the extension portions 96b and 96b of the spring portion 96, respectively. The second convex portion 97c is formed in a hat shape in a plan view and has a trapezoidal shape protruding in the outer peripheral direction. In the trapezoidal portion of the second convex portion 97c, the dimension of the upper base is smaller than the distance between the extension portions 96b and 96b of the spring portion 96, and the dimension of the lower base is larger than the distance between the extension portions 96b and 96b. Is formed in. The second convex portion 97c is arranged between the base end portions 96c and 96c of the spring portion 96. The elastic engaging portion 95 is held by the spring holding portion 97 so that the spring portion 96 exerts a pressing force outward in the radial direction. Although the details will be described later, the elastic engaging portion 95 can appear and disappear according to the radial inward force applied when the radial outer tip portion 96a of the spring portion 96 comes into contact with the ridge portion 22d of the instrument body 21. It is configured in.
上述したように取付部材９１には、器具本体２１の係止部２２ｂを係止するために被係止部９４が設けられている。器具本体２１を取付部材９１に取り付ける場合、作業者は器具本体２１を手で把持した状態で、係止部２２ｂを被係止部９４の切欠き部９４ａに挿入し、この状態のまま器具本体２１を周方向の一方に回動する。この回動の際には係止部２２ｂが案内部９４ｂにより係止位置（係止部２２ｂの回動方向の終端位置）まで案内されるとともに案内部９４ｂの下端部が位置決め部２２ａの上端に乗り上げる。同時に、この回動の際には、取付部材９１に設けられた弾性係合部９５が器具本体２１の内周面を押圧しながら周方向に移動する。その際に突条部２２ｄに差し掛かると、先ず当該突条部２２ｄの緩やかな斜面である第１傾斜面２２ｄ１に沿って弾性係合部９５のバネ部９６の先端部９６ａが径方向内側に移動する。このとき、延長部９６ｂと基端部９６ｃは、第１凸部９７ｂと第２凸部９７ｃとに規制されて、バネ部９６は延長部９６ｂと基端部９６ｃが外側に広がるように変形する。さらに回動すると、当該バネ部９６が突条部２２ｄの頂部を乗り越えて第２傾斜面２２ｄ２に至ると、バネ部９６の復元力によりバネ部９６は元の形状に戻り、先端部９６ａは元の位置に戻る。これにより、器具本体２１が取付部材９１に対して回転しないようにする回転止めとなる（本実施形態では、突条部２２ｄが二つ設けられるため、この過程が２回繰り返される）。ここで、突条部２２ｄを平面視で見てみると、一方（取り外し時の回動方向側）の第１傾斜面２２ｄ１よりも他方（取り付け時の回動方向側）の第２傾斜面２２ｄ２を急峻となるように構成することで、器具本体２１が取り外し方向に回動してもバネ部９６が突条部２２ｄを乗り越えにくい構造となっている。このため、振動等により不意に器具本体２１が取付部材９１から外れることを防止することができる。
As described above, the mounting member 91 is provided with a locked portion 94 for locking the locking portion 22b of the instrument main body 21. When the instrument main body 21 is attached to the attachment member 91, the operator inserts the locking portion 22b into the notch portion 94a of the locked portion 94 while holding the instrument main body 21 by hand, and the instrument main body remains in this state. 21 is rotated in one direction in the circumferential direction. At the time of this rotation, the locking portion 22b is guided to the locking position (the end position in the rotation direction of the locking portion 22b) by the guide portion 94b, and the lower end portion of the guide portion 94b is at the upper end of the positioning portion 22a. Get on. At the same time, at the time of this rotation, the elastic engaging portion 95 provided on the mounting member 91 moves in the circumferential direction while pressing the inner peripheral surface of the instrument main body 21. At that time, when approaching the ridge portion 22d, first, the tip portion 96a of the spring portion 96 of the elastic engaging portion 95 is radially inward along the first inclined surface 22d1 which is a gentle slope of the ridge portion 22d. Moving. At this time, the extension portion 96b and the base end portion 96c are restricted by the first convex portion 97b and the second convex portion 97c, and the spring portion 96 is deformed so that the extension portion 96b and the base end portion 96c spread outward. .. When the spring portion 96 is further rotated and reaches the second inclined surface 22d2 over the top of the ridge portion 22d, the spring portion 96 returns to the original shape due to the restoring force of the spring portion 96, and the tip portion 96a returns to the original shape. Return to the position of. This serves as a rotation stopper that prevents the instrument body 21 from rotating with respect to the mounting member 91 (in this embodiment, since two ridges 22d are provided, this process is repeated twice). Here, when the ridge portion 22d is viewed in a plan view, the second inclined surface 22d2 on the other side (rotation direction side at the time of attachment) is more than the first inclined surface 22d1 on one side (rotation direction side at the time of removal). Is configured to be steep so that the spring portion 96 does not easily get over the ridge portion 22d even if the instrument main body 21 rotates in the removal direction. Therefore, it is possible to prevent the instrument body 21 from being unexpectedly detached from the mounting member 91 due to vibration or the like.
器具本体２１を取付部材９１に取り付ける際の器具本体２１の回動時において、バネ部９６の先端部９６ａが突条部２２ｄ・２２ｄに当接しながら乗り越える際には２回先端部９６ａの係合音が発生する。これにより、器具本体２１が取付部材９１に確実に取付けられたことを作業者は知覚することができる。一方、器具本体２１を外すための回動時には、バネ部９６の先端部９６ａが突条部２２ｄ・２２ｄに当接しながら乗り越える際には２回先端部９６ａの係合解除音が発生する。これにより、器具本体２１が取付部材９１から確実に取り外されたことを作業者は知覚することができる。また、器具本体２１を取付部材９１から取り外す場合は、取付部材９１に対して器具本体２１を上記回動方向とは反対方向に回動することで容易に取り外すことができる。
When the instrument body 21 is rotated when the instrument body 21 is attached to the mounting member 91, the tip 96a of the spring portion 96 is engaged twice when the tip 96a gets over while contacting the ridges 22d and 22d. There is a sound. As a result, the operator can perceive that the instrument main body 21 is securely attached to the attachment member 91. On the other hand, at the time of rotation for removing the instrument main body 21, when the tip portion 96a of the spring portion 96 gets over while contacting the ridge portions 22d and 22d, the disengagement sound of the tip portion 96a is generated twice. As a result, the operator can perceive that the instrument main body 21 has been reliably removed from the mounting member 91. Further, when the instrument body 21 is removed from the mounting member 91, the instrument body 21 can be easily removed by rotating the instrument body 21 with respect to the mounting member 91 in a direction opposite to the rotation direction.
このように係止部２２ｂを被係止部９４に係止することで、器具本体２１は取付部材９１に取り付けられる。また、器具本体２１が取付部材９１に取り付けられた状態で器具本体２１を周方向の他方に回動させると、器具本体２１の係止部２２ｂが取付部材９１の被係止部９４から外れて、器具本体２１を取付部材９１から取り外すことができる。
By locking the locking portion 22b to the locked portion 94 in this way, the instrument main body 21 is attached to the mounting member 91. Further, when the instrument body 21 is rotated to the other side in the circumferential direction while the instrument body 21 is attached to the mounting member 91, the locking portion 22b of the instrument body 21 is disengaged from the locked portion 94 of the mounting member 91. , The instrument body 21 can be removed from the mounting member 91.
以上説明した本実施形態に係る照明器具１１によれば、光源部４１の複数のＬＥＤ素子４２は、導光部材５１の外周端近傍に対向して配置され、導光部材５１と対向する位置にＬＥＤ素子４２から出射された光を反射する反射部材６１を有している。これにより、反射部材６１は、導光部材５１の取付面側（背面側）から出てきた光を導光部材５１の内部に向けて反射させる。反射部材６１は、ＬＥＤ素子４２から出射された光、及び導光部材５１の内壁面で反射された光を反射して照射面側に出射することができる。また、反射部材６１は、ＬＥＤ素子４２の基板４３からの高さ寸法に対して同じもしくはやや低くなるように構成されている。これにより、嵩が高くない反射部材を構成することができる。ひいては、光源としてＬＥＤ素子４２を有し、かつ薄型の均一性を高めた照明光を得られる照明器具を提供することができる。特に電源部３１を収容した照明器具において、広い照射面を確保したまま薄型化を実現することができる。また、照明器具１１を取り付ける際に、外部商用電源と接続させるためのスペースを広く確保することができ、照明器具１１の取付作業がしやすくなる。
According to the lighting fixture 11 according to the present embodiment described above, the plurality of LED elements 42 of the light source unit 41 are arranged to face each other in the vicinity of the outer peripheral end of the light guide member 51, and are located at positions facing the light guide member 51. It has a reflecting member 61 that reflects the light emitted from the LED element 42. As a result, the reflecting member 61 reflects the light emitted from the mounting surface side (rear surface side) of the light guide member 51 toward the inside of the light guide member 51. The reflecting member 61 can reflect the light emitted from the LED element 42 and the light reflected by the inner wall surface of the light guide member 51 and emit the light to the irradiation surface side. Further, the reflective member 61 is configured to be the same as or slightly lower than the height dimension of the LED element 42 from the substrate 43. This makes it possible to construct a reflective member that is not bulky. As a result, it is possible to provide a luminaire having an LED element 42 as a light source and being thin and capable of obtaining illuminating light with improved uniformity. In particular, in a lighting fixture that accommodates the power supply unit 31, it is possible to realize a thinning while ensuring a wide irradiation surface. Further, when the luminaire 11 is attached, a large space for connecting to the external commercial power source can be secured, and the luminaire 11 can be easily attached.
また、本実施形態の照明器具１１では、導光部材５１の外周縁の外側に当該外周縁を囲う環状反射部材７１をさらに有している。これにより、上記反射部材６１は主に導光部材５１の上面から出る光を反射するとともに、環状反射部材７１は導光部材５１の側方から出る光を確実に反射することができるため、より均一性を高めた照明光を得ることができる。
また、本実施形態の照明器具１１では、環状反射部材７１の高さ寸法は、ＬＥＤ素子４２の高さ寸法と環状反射部材７１の高さ寸法とを足した寸法と略同等になるように構成されている。このように構成することで、照明器具１１を上下方向に大型化させることなく照明器具１１の小型化が図れる。すなわち、薄型の照明器具を実現することができる。
Further, the luminaire 11 of the present embodiment further has an annular reflection member 71 that surrounds the outer peripheral edge of the light guide member 51 outside the outer peripheral edge of the light guide member 51. As a result, the reflective member 61 mainly reflects the light emitted from the upper surface of the light guide member 51, and the annular reflection member 71 can reliably reflect the light emitted from the side of the light guide member 51. Illumination light with improved uniformity can be obtained.
Further, in the lighting fixture 11 of the present embodiment, the height dimension of the annular reflection member 71 is configured to be substantially the same as the sum of the height dimension of the LED element 42 and the height dimension of the annular reflection member 71. Has been done. With this configuration, the lighting fixture 11 can be miniaturized without increasing the size of the lighting fixture 11 in the vertical direction. That is, a thin lighting fixture can be realized.
また、本実施形態の照明器具１１では、器具本体２１は、導光部材５１の照射面側と対向するとともに、平面視においてＬＥＤ素子４２と重なる反射部２３ａをさらに有している。このように、反射部２３ａは、ＬＥＤ素子４２の少なくとも一部と重なるように配置されることで、ＬＥＤ素子４２が発する光の直接光を遮るため、ユーザーの目に直接ＬＥＤ素子４２が発する光が達することを抑えることできる。これにより、照明光のムラを抑えるとともに、グレアを軽減した照明光を得ることができる。
Further, in the lighting fixture 11 of the present embodiment, the fixture main body 21 faces the irradiation surface side of the light guide member 51 and further has a reflecting portion 23a that overlaps with the LED element 42 in a plan view. In this way, the reflecting portion 23a is arranged so as to overlap at least a part of the LED element 42, thereby blocking the direct light of the light emitted by the LED element 42, so that the light emitted by the LED element 42 directly to the user's eyes. Can be suppressed from reaching. As a result, it is possible to obtain illumination light with reduced glare while suppressing unevenness of the illumination light.
また、本実施形態の照明器具１１では、器具本体２１は、器具本体２１内での光源セット部８１の高さ方向の位置決めをする位置決め部２２ａをさらに有している。これにより、光源セット部８１を器具本体２１内の所望の位置に位置決めして、保持することができる。
Further, in the lighting fixture 11 of the present embodiment, the fixture main body 21 further has a positioning portion 22a for positioning the light source setting portion 81 in the fixture main body 21 in the height direction. As a result, the light source setting unit 81 can be positioned and held at a desired position in the instrument main body 21.
また、本実施形態の照明器具１１では、取付部材９１に対して器具本体２１を回動させることで、器具本体２１の係止部２２ｂが取付部材９１の被係止部９４（案内部９４ｂ）に案内されるとともに係止される。さらに、取付部材９１に対して器具本体２１を回動させることで、バネ部９６の先端部９６ａが突条部２２ｄ・２２ｄに当接しながら乗り越える。これにより、被取付部Ｃに固定された取付部材９１に器具本体２１をネジ止め作業を必要とせずに取り付けることができる。すなわち、照明器具１１を被取付部Ｃに取り付ける際に、ネジ止め作業が少なく、取付作業を容易に行うことができる。また、バネ部９６を突条部２２ｄ・２２ｄを乗り越えさせることで、器具本体２１の回転止めとなり、器具本体２１が取付部材９１から脱落することを防止する。また、本実施形態の照明器具１１のように、突条部２２ｄを複数設けた場合は、器具本体２１の脱落を更に防止することができる。
Further, in the lighting fixture 11 of the present embodiment, by rotating the fixture main body 21 with respect to the mounting member 91, the locking portion 22b of the fixture main body 21 becomes the locked portion 94 (guide portion 94b) of the mounting member 91. It is locked while being guided by. Further, by rotating the instrument main body 21 with respect to the mounting member 91, the tip portion 96a of the spring portion 96 gets over while contacting the ridge portions 22d and 22d. As a result, the appliance main body 21 can be attached to the attachment member 91 fixed to the attached portion C without the need for screwing work. That is, when the luminaire 11 is attached to the attached portion C, there is less screwing work, and the attachment work can be easily performed. Further, by allowing the spring portion 96 to get over the ridge portions 22d and 22d, the rotation of the instrument main body 21 is stopped, and the instrument main body 21 is prevented from falling off from the mounting member 91. Further, when a plurality of ridge portions 22d are provided as in the lighting fixture 11 of the present embodiment, it is possible to further prevent the fixture main body 21 from falling off.
また、本実施形態の照明器具１１では、突条部２２ｄは、被取付部Ｃに平行な断面において器具本体２１を回動させる方向に向かうにつれて器具本体２１（円筒部２２）の内周面から器具本体２１の径方向内側に向かうように傾斜する傾斜面である第１傾斜面２２ｄ１を有している。これにより、器具本体２１の取付時にバネ部９６の先端部９６ａが突条部２２ｄを乗り越えやすく、器具本体２１を取付けしやすい。一方、上述したように第１傾斜面２２ｄ１に隣接して第１傾斜面２２ｄ１より傾斜している第２傾斜面２２ｄ２を有している。これにより、器具本体２１の取り外しの際に回動方向の逆方向に器具本体２１を回動する場合は、突条部２２ｄを乗り越えにくいため、不意に器具本体２１が取付部材９１から脱落することを防止することができる。
Further, in the lighting fixture 11 of the present embodiment, the ridge portion 22d is directed from the inner peripheral surface of the fixture body 21 (cylindrical portion 22) toward the direction in which the fixture body 21 is rotated in a cross section parallel to the attached portion C. It has a first inclined surface 22d1, which is an inclined surface inclined inward in the radial direction of the instrument main body 21. As a result, when the instrument body 21 is attached, the tip portion 96a of the spring portion 96 can easily get over the ridge portion 22d, and the instrument body 21 can be easily attached. On the other hand, as described above, it has a second inclined surface 22d2 adjacent to the first inclined surface 22d1 and inclined from the first inclined surface 22d1. As a result, when the instrument body 21 is rotated in the opposite direction to the rotation direction when the instrument body 21 is removed, it is difficult to get over the ridge portion 22d, so that the instrument body 21 suddenly falls off from the mounting member 91. Can be prevented.
また、本実施形態の照明器具１１では、取付部材９１の被係止部９４の先端部９４ｄが平面視で角取りされている。これにより、器具本体２１を取付部材９１に取り付ける際に、器具本体２１の係止部２２ｂの先端と先端部９４ｄとが接触しにくくなり、取付作業がしやすい。
Further, in the luminaire 11 of the present embodiment, the tip portion 94d of the locked portion 94 of the mounting member 91 is angled in a plan view. As a result, when the instrument body 21 is attached to the attachment member 91, the tip of the locking portion 22b of the instrument body 21 and the tip portion 94d are less likely to come into contact with each other, which facilitates the attachment work.
